Display case door



FIG. 1 is a front perspective view of a display case door, with a display case and shelves shown in broken lines for purposes of illustration only and forming no part of the claimed design;

FIG. 2 is a front plan view thereof;

FIG. 3 is a top plan view thereof, the bottom plan view being a mirror image;

FIG. 4 is a right side view thereof, the left side view being a mirror image; and,

FIG. 5 is a rear view thereof. 

The ornamental design for a display case door, as shown and described. 